Question

18.41 Using enthalpies of formation (Appendix C), calculate ?H° for the following reaction at 25°C. Also calculate ?S° for this reaction from standard entropies at 25°C. Use these values to calculate ?G° for the reaction at this temperature. COCl$_2$(g) + H$_2$O(l) ? CO$_2$(g) + 2HCl(g) Answer: -72.2 kJ 233.5 J/K -141.8 kJ

          18.41 Using enthalpies of formation (Appendix C), calculate ?H° for the following reaction at 25°C. Also calculate ?S° for this reaction from standard entropies at 25°C. Use these values to calculate ?G° for the reaction at this temperature.
COCl$_2$(g) + H$_2$O(l) ? CO$_2$(g) + 2HCl(g)
Answer:
-72.2 kJ
233.5 J/K
-141.8 kJ

18.41 Using enthalpies of formation (Appendix C), calculate ?H° for the following reaction at 25°C. Also calculate ?S° for this reaction from standard entropies at 25°C. Use these values to calculate ?G° for the reaction at this temperature.
COCl2(g) + H2O(l) ? CO2(g) + 2HCl(g)
Answer:
-72.2 kJ
233.5 J/K
-141.8 kJ

Added by Paula B.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Lottie Adams

07/27/2021

Step 1

∆H° = Σn∆H°f(products) - Σm∆H°f(reactants) ∆H° = [∆H°f(CO2(g)) + 2∆H°f(HCl(g))] - [∆H°f(COCl2(g)) + ∆H°f(H2O(l))] ∆H° = [(-393.5 kJ/mol) + 2(-92.3 kJ/mol)] - [(-218.8 kJ/mol) + (-285.8 kJ/mol)] ∆H° = -72.2 kJ/mol Show more…

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18.41 Using enthalpies of formation (Appendix C), calculate ∆H° for the following reaction at 25°C. Also calculate AS for this reaction from standard entropies at 25°C. Use these values to calculate AG for the reaction at this temperature. COCl2(g) + H2O(l) → CO2(g) + 2HCl(g) Answer: -72.2 kJ 233.5 J/K -141.8 kJ